After just two days of operation, St. Louis officials are changing a new traffic routing system through Forest Park that was supposed to ease flow at the park's Hampton Avenue entrance -- but instead led to ever more gridlock.

On Saturday, motorists waited 40 minutes to enter the park along Hampton Avenue as they navigated the new route which prohibited them from turning left into the zoo's paid parking lots. By mid-afternoon those $12-per-day lots -- a key revenue generator for the zoo -- sat mainly empty thanks to the new route.